got into Arduino tinkering just two weeks ago (first simple robot project is here: http://www.youtube.com/watch?v=LtwYti5t7Ko ) and I love it!

Next project would be a kind of "ticker" which displays a bit of text I get from a website on an LCD Display. I have already used the Wifi Shield to get the data from the Website and can display text with the LCD Keypad Shield - but only one shield at a time.

Any information or tutorial how to make both shields work in combination? Or how I can add an LCD Display (without shield) by my own? I googled a lot but could not find any tutorial or a Youtube demo on the successful combination of Wifi and LCD.

I was also having trouble using the Arduino WiFi shield and a LCD as it needed to use the same pins. But I figure out I could use both by using a Mega 2560. The examples page on Arduino.cc of LCD's show that the display needs to use digital pins 5, 4, 3 and 2 for data. But the WiFi shield needs pin 4 for SD card. Also pins 12 and 13 are different on the Mega from the Uno. So the only thing I had to change was move the wire from digital pin 4, to any other pin (I chose 22) and put it in the code. This let me use both at once.

The examples page on Arduino.cc of LCD's show that the display needs to use digital pins 5, 4, 3 and 2 for data.

You are interpreting the example incorrectly because the example was not adequately explained.

The LiquidCrystal library can use any available Arduino I/O pin for any of the six LCD signals. The example just happens to use pins 5, 4, 3, and 2 for data (as well as 12 and 11 for RS and E) but that was an arbitrary choice. All you have to do is match up the LiquidCrystal lcd(. . . ); statement to match your connections. Two additional comments in the example would have illustrated this quite well.

Edit: If you are using an LCD shield then the situation is a bit different. In this case the pin numbers are fixed because the designer of the shield has chosen which Arduino I/O pins to use. The choice was arbitrary when he chose the pins but once the shield is manufactured then the LiquidCrystal lcd(. . . ); statement must match that design.